I was going to start the heatran quest, but I got confused and got into the Stark Mount Exterior Pt with just the snorlax on the team. I thought that from there was already in the quest, however when winning a battle against npc he received exp and gained a level. I know it's not about evolution but is it possible to reverse this? I do not know what kind of solution you give to evolve a level 100 pokemon, but I thought you could roll it back to level 99. I really lost time training him just for this quest. Ty